Try our "Helping Hand" arm, we guarantee you will never play Mah Jongg again without it!! Attaches easily to your Mah Jong rack without tools or screws. Then you ask, "what is it for?" It is for pushing out the tile courtesy wall in front of your rack. Use our "Helping Hand" arm and you will never have to push your rack out again. If you are like me, you manage to knock tiles off the rack & show everyone your hand, plus the courtesy tiles sometimes spill over. Use our Mah Jongg arm, and leave your rack in place - you will love it!!